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分享winhttp在win7下的2个问题，300分送上
大家好，我在使用winhttp编程的时候碰到2个问题，主要是Ntlm代理环境下访问网络方面的问题，百思不得其解，向大家请教：
1.以下这份代码，在xp-Ntlm代理环境下，运行很正常，但是到了win7下，服务器始终返回407.
抓包发现：
在XP:WinhttpSendRequest后，程序开始发包，但是不会自动进行NTLM的验证过程，验证过程需要自己实现（HASH和挑战-响应过程不需要代码实现，程序自动进行），需要自己resend。
具体过程为：
1) Get www.xxx.com
2) Get NtlmSSP_NEGOTIATE
3) Get NtlmSSP_AUTH
然后服务器就返回200.
在win7：WinhttpSendRequest后，程序开始发包，连续进行了3次发包，验证过程已经一次性地发出去了，过程为
1) Get www.xxx.com
2) Get NtlmSSP_NEGOTIATE
3) Get NtlmSSP_AUTH
然后服务器就返回407.再继续resend多少次都是407.win7下浏览器设置代理后可以正常上网。
问题：win7下程序进行NTLM验证需要什么特别的设置吗？
2.winhttp中如果收到302会自动重定向， 有没有办法使得程序不会自动重定向？
（在C#中有这个设置,c++中目前我还没找到方法）
希望大家能指点一二，只能发100分帖，解决问题了，会补上。
1.以下这份代码，在xp-Ntlm代理环境下，运行很正常，但是到了win7下，服务器始终返回407.
抓包发现：
在XP:WinhttpSendRequest后，程序开始发包，但是不会自动进行NTLM的验证过程，验证过程需要自己实现（HASH和挑战-响应过程不需要代码实现，程序自动进行），需要自己resend。
具体过程为：
1) Get www.xxx.com
2) Get NtlmSSP_NEGOTIATE
3) Get NtlmSSP_AUTH
然后服务器就返回200.
在win7：WinhttpSendRequest后，程序开始发包，连续进行了3次发包，验证过程已经一次性地发出去了，过程为
1) Get www.xxx.com
2) Get NtlmSSP_NEGOTIATE
3) Get NtlmSSP_AUTH
然后服务器就返回407.再继续resend多少次都是407.win7下浏览器设置代理后可以正常上网。
问题：win7下程序进行NTLM验证需要什么特别的设置吗？
2.winhttp中如果收到302会自动重定向， 有没有办法使得程序不会自动重定向？
（在C#中有这个设置,c++中目前我还没找到方法）
希望大家能指点一二，只能发100分帖，解决问题了，会补上。
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zylayale 2013-09-17
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大牛求分。。。
zylayale 2013-09-17
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马勒戈壁的，今天再次被此问题困扰……
原因如下：因为SQUID代理服务器不支持HTTP1.1请求，而WinHttp会默认使用HTTP/1.1，导致失败。
解决方案：1.WinhttpOpenRequest使用HTTP/1.0访问
2.Squid打开对http/1.1的支持
经测试第2步可以解决。坑爹！（但是ntlm+http/1.0支持的代理是否仍会出问题，这点有待测试）
solohac 2011-12-29
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有人能帮看看吗？
ganzhezeng 2011-12-27
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#include "stdafx.h"
#include <windows.h>
#include <winhttp.h>
#include <stdio.h>
#pragma comment(lib, "winhttp.lib")
DWORD ChooseAuthScheme( DWORD dwSupportedSchemes )
{
// It is the server's responsibility only to accept
// authentication schemes that provide a sufficient
// level of security to protect the servers resources.
//
// The client is also obligated only to use an authentication
// scheme that adequately protects its username and password.
//
// Thus, this sample code does not use Basic authentication
// becaus Basic authentication exposes the client's username
// and password to anyone monitoring the connection.
if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_NEGOTIATE )
return WINHTTP_AUTH_SCHEME_NEGOTIATE;
else if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_NTLM )
return WINHTTP_AUTH_SCHEME_NTLM;
else if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_PASSPORT )
return WINHTTP_AUTH_SCHEME_PASSPORT;
else if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_DIGEST )
return WINHTTP_AUTH_SCHEME_DIGEST;
else
return 0;
}
struct SWinHttpSampleGet
{
LPCWSTR szServer;
LPCWSTR szPath;
BOOL fUseSSL;
LPCWSTR szServerUsername;
LPCWSTR szServerPassword;
LPCWSTR szProxyUsername;
LPCWSTR szProxyPassword;
};
void WinHttpAuthSample( )
{
DWORD dwStatusCode = 0;
DWORD dwSupportedSchemes;
DWORD dwFirstScheme;
DWORD dwSelectedScheme;
DWORD dwTarget;
DWORD dwLastStatus = 0;
DWORD dwSize = sizeof(DWORD);
BOOL bResults = FALSE;
BOOL bDone = FALSE;
DWORD dwProxyAuthScheme = 0;
HINTERNET hSession = NULL,
hConnect = NULL,
hRequest = NULL;
bool testB = false;
DWORD errorCode = 0;
WINHTTP_CURRENT_USER_IE_PROXY_CONFIG proxyConfig;
WinHttpGetIEProxyConfigForCurrentUser(&proxyConfig);
hSession = WinHttpOpen( L"Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1;)",
WINHTTP_ACCESS_TYPE_NAMED_PROXY,
L"192.168.10.109:3128",
WINHTTP_NO_PROXY_BYPASS,
0 );
//
errorCode = GetLastError();
// Specify an HTTP server.
if( hSession )
hConnect = WinHttpConnect( hSession,
L"tieba.baidu.com" ,
INTERNET_DEFAULT_HTTP_PORT,
0 );
//
errorCode = GetLastError();
// Create an HTTP request handle.
if( hConnect )
hRequest = WinHttpOpenRequest( hConnect,
L"GET",
L"/index.html",
L"HTTP/1.1",
WINHTTP_NO_REFERER,
WINHTTP_DEFAULT_ACCEPT_TYPES,
0 );
//
errorCode = GetLastError();
// Continue to send a request until status code
// is not 401 or 407.
if( hRequest == NULL )
bDone = TRUE;
while( !bDone )
{
// If a proxy authentication challenge was responded to, reset
// those credentials before each SendRequest, because the proxy
// may require re-authentication after responding to a 401 or
// to a redirect. If you don't, you can get into a
// 407-401-407-401- loop.
if( dwProxyAuthScheme != 0 )
bResults = WinHttpSetCredentials( hRequest,
WINHTTP_AUTH_TARGET_PROXY,
// dwProxyAuthScheme,
// WINHTTP_AUTH_SCHEME_NTLM,
dwProxyAuthScheme,
NULL,
NULL,
NULL );
//
errorCode = GetLastError();
if (!testB)
{
const TCHAR contentLogin[] = L"Accept: */*\r\n";
BOOL ret = WinHttpAddRequestHeaders (hRequest, contentLogin, wcslen(contentLogin), WINHTTP_ADDREQ_FLAG_ADD);
//
errorCode = GetLastError();
const TCHAR c1[] = L"Accept-Charset: GBK,utf-8;q=0.7,*;q=0.3\r\n";
ret = WinHttpAddRequestHeaders (hRequest, c1, wcslen(c1), WINHTTP_ADDREQ_FLAG_ADD );
const TCHAR c2[] = L"Accept-Encoding: gzip,deflate\r\n";
ret = WinHttpAddRequestHeaders (hRequest, c2, wcslen(c2), WINHTTP_ADDREQ_FLAG_ADD );
const TCHAR c3[] = L"Accept-Language: zh-cn\r\n";
ret = WinHttpAddRequestHeaders (hRequest, c3, wcslen(c3), WINHTTP_ADDREQ_FLAG_ADD );
testB = true;
}
// Send a request.
bResults = WinHttpSendRequest( hRequest,
WINHTTP_NO_ADDITIONAL_HEADERS,
0,
WINHTTP_NO_REQUEST_DATA,
0,
0,
0 );
//
errorCode = GetLastError();
// End the request.
if( bResults )
{
bResults = WinHttpReceiveResponse( hRequest, NULL );
//
errorCode = GetLastError();
}
// Resend the request in case of
// ERROR_WINHTTP_RESEND_REQUEST error.
if( !bResults && GetLastError( ) == ERROR_WINHTTP_RESEND_REQUEST)
{
continue;
//
errorCode = GetLastError();
}
// Check the status code.
if( bResults )
{
bResults = WinHttpQueryHeaders( hRequest,
WINHTTP_QUERY_STATUS_CODE |
WINHTTP_QUERY_FLAG_NUMBER,
NULL,
&dwStatusCode,
&dwSize,
NULL );
//
errorCode = GetLastError();
}
if( bResults )
{
switch( dwStatusCode )
{
case 200:
// The resource was successfully retrieved.
// You can use WinHttpReadData to read the
// contents of the server's response.
printf( "The resource was successfully retrieved.\n" );
bDone = TRUE;
break;
case 401:
// The server requires authentication.
printf(" The server requires authentication. Sending credentials...\n" );
// Obtain the supported and preferred schemes.
bResults = WinHttpQueryAuthSchemes( hRequest,
&dwSupportedSchemes,
&dwFirstScheme,
&dwTarget );
// Set the credentials before resending the request.
if( bResults )
{
dwSelectedScheme = ChooseAuthScheme( dwSupportedSchemes);
if( dwSelectedScheme == 0 )
bDone = TRUE;
else
bResults = WinHttpSetCredentials( hRequest,
WINHTTP_AUTH_TARGET_PROXY,
WINHTTP_AUTH_SCHEME_NTLM,
NULL,
NULL,
NULL );
}
// If the same credentials are requested twice, abort the
// request. For simplicity, this sample does not check
// for a repeated sequence of status codes.
if( dwLastStatus == 401 )
bDone = TRUE;
break;
case 407:
// The proxy requires authentication.
printf( "The proxy requires authentication. Sending credentials...\n" );
// Obtain the supported and preferred schemes.
bResults = WinHttpQueryAuthSchemes( hRequest,
&dwSupportedSchemes,
&dwFirstScheme,
&dwTarget );
// Set the credentials before resending the request.
if( bResults )
dwProxyAuthScheme = ChooseAuthScheme(dwSupportedSchemes);
// If the same credentials are requested twice, abort the
// request. For simplicity, this sample does not check
// for a repeated sequence of status codes.
if( dwLastStatus == 407 )
bDone = TRUE;
break;
default:
// The status code does not indicate success.
printf("Error. Status code %d returned.\n", dwStatusCode);
bDone = TRUE;
}
}
// Keep track of the last status code.
dwLastStatus = dwStatusCode;
// If there are any errors, break out of the loop.
if( !bResults )
bDone = TRUE;
}
// Report any errors.
if( !bResults )
{
DWORD dwLastError = GetLastError( );
printf( "Error %d has occurred.\n", dwLastError );
}
// Close any open handles.
if( hRequest ) WinHttpCloseHandle( hRequest );
if( hConnect ) WinHttpCloseHandle( hConnect );
if( hSession ) WinHttpCloseHandle( hSession );
}
int _tmain(int argc, _TCHAR* argv[])
{
WinHttpAuthSample();
return 0;
}
ganzhezeng 2011-12-27
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#include "stdafx.h"
#include <windows.h>
#include <winhttp.h>
#include <stdio.h>
#pragma comment(lib, "winhttp.lib")
DWORD ChooseAuthScheme( DWORD dwSupportedSchemes )
{
// It is the server's responsibility only to accept
// authentication schemes that provide a sufficient
// level of security to protect the servers resources.
//
// The client is also obligated only to use an authentication
// scheme that adequately protects its username and password.
//
// Thus, this sample code does not use Basic authentication
// becaus Basic authentication exposes the client's username
// and password to anyone monitoring the connection.
if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_NEGOTIATE )
return WINHTTP_AUTH_SCHEME_NEGOTIATE;
else if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_NTLM )
return WINHTTP_AUTH_SCHEME_NTLM;
else if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_PASSPORT )
return WINHTTP_AUTH_SCHEME_PASSPORT;
else if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_DIGEST )
return WINHTTP_AUTH_SCHEME_DIGEST;
else
return 0;
}
struct SWinHttpSampleGet
{
LPCWSTR szServer;
LPCWSTR szPath;
BOOL fUseSSL;
LPCWSTR szServerUsername;
LPCWSTR szServerPassword;
LPCWSTR szProxyUsername;
LPCWSTR szProxyPassword;
};
void WinHttpAuthSample( )
{
DWORD dwStatusCode = 0;
DWORD dwSupportedSchemes;
DWORD dwFirstScheme;
DWORD dwSelectedScheme;
DWORD dwTarget;
DWORD dwLastStatus = 0;
DWORD dwSize = sizeof(DWORD);
BOOL bResults = FALSE;
BOOL bDone = FALSE;
DWORD dwProxyAuthScheme = 0;
HINTERNET hSession = NULL,
hConnect = NULL,
hRequest = NULL;
bool testB = false;
DWORD errorCode = 0;
WINHTTP_CURRENT_USER_IE_PROXY_CONFIG proxyConfig;
WinHttpGetIEProxyConfigForCurrentUser(&proxyConfig);
hSession = WinHttpOpen( L"Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1;)",
WINHTTP_ACCESS_TYPE_NAMED_PROXY,
L"192.168.10.109:3128",
WINHTTP_NO_PROXY_BYPASS,
0 );
//
errorCode = GetLastError();
// Specify an HTTP server.
if( hSession )
hConnect = WinHttpConnect( hSession,
L"tieba.baidu.com" ,
INTERNET_DEFAULT_HTTP_PORT,
0 );
//
errorCode = GetLastError();
// Create an HTTP request handle.
if( hConnect )
hRequest = WinHttpOpenRequest( hConnect,
L"GET",
L"/index.html",
L"HTTP/1.1",
WINHTTP_NO_REFERER,
WINHTTP_DEFAULT_ACCEPT_TYPES,
0 );
//
errorCode = GetLastError();
// Continue to send a request until status code
// is not 401 or 407.
if( hRequest == NULL )
bDone = TRUE;
while( !bDone )
{
// If a proxy authentication challenge was responded to, reset
// those credentials before each SendRequest, because the proxy
// may require re-authentication after responding to a 401 or
// to a redirect. If you don't, you can get into a
// 407-401-407-401- loop.
if( dwProxyAuthScheme != 0 )
bResults = WinHttpSetCredentials( hRequest,
WINHTTP_AUTH_TARGET_PROXY,
// dwProxyAuthScheme,
// WINHTTP_AUTH_SCHEME_NTLM,
dwProxyAuthScheme,
NULL,
NULL,
NULL );
//
errorCode = GetLastError();
if (!testB)
{
const TCHAR contentLogin[] = L"Accept: */*\r\n";
BOOL ret = WinHttpAddRequestHeaders (hRequest, contentLogin, wcslen(contentLogin), WINHTTP_ADDREQ_FLAG_ADD);
//
errorCode = GetLastError();
const TCHAR c1[] = L"Accept-Charset: GBK,utf-8;q=0.7,*;q=0.3\r\n";
ret = WinHttpAddRequestHeaders (hRequest, c1, wcslen(c1), WINHTTP_ADDREQ_FLAG_ADD );
const TCHAR c2[] = L"Accept-Encoding: gzip,deflate\r\n";
ret = WinHttpAddRequestHeaders (hRequest, c2, wcslen(c2), WINHTTP_ADDREQ_FLAG_ADD );
const TCHAR c3[] = L"Accept-Language: zh-cn\r\n";
ret = WinHttpAddRequestHeaders (hRequest, c3, wcslen(c3), WINHTTP_ADDREQ_FLAG_ADD );
testB = true;
}
// Send a request.
bResults = WinHttpSendRequest( hRequest,
WINHTTP_NO_ADDITIONAL_HEADERS,
0,
WINHTTP_NO_REQUEST_DATA,
0,
0,
0 );
//
errorCode = GetLastError();
// End the request.
if( bResults )
{
bResults = WinHttpReceiveResponse( hRequest, NULL );
//
errorCode = GetLastError();
}
// Resend the request in case of
// ERROR_WINHTTP_RESEND_REQUEST error.
if( !bResults && GetLastError( ) == ERROR_WINHTTP_RESEND_REQUEST)
{
continue;
//
errorCode = GetLastError();
}
// Check the status code.
if( bResults )
{
bResults = WinHttpQueryHeaders( hRequest,
WINHTTP_QUERY_STATUS_CODE |
WINHTTP_QUERY_FLAG_NUMBER,
NULL,
&dwStatusCode,
&dwSize,
NULL );
//
errorCode = GetLastError();
}
if( bResults )
{
switch( dwStatusCode )
{
case 200:
// The resource was successfully retrieved.
// You can use WinHttpReadData to read the
// contents of the server's response.
printf( "The resource was successfully retrieved.\n" );
bDone = TRUE;
break;
case 401:
// The server requires authentication.
printf(" The server requires authentication. Sending credentials...\n" );
// Obtain the supported and preferred schemes.
bResults = WinHttpQueryAuthSchemes( hRequest,
&dwSupportedSchemes,
&dwFirstScheme,
&dwTarget );
// Set the credentials before resending the request.
if( bResults )
{
dwSelectedScheme = ChooseAuthScheme( dwSupportedSchemes);
if( dwSelectedScheme == 0 )
bDone = TRUE;
else
bResults = WinHttpSetCredentials( hRequest,
WINHTTP_AUTH_TARGET_PROXY,
WINHTTP_AUTH_SCHEME_NTLM,
NULL,
NULL,
NULL );
}
// If the same credentials are requested twice, abort the
// request. For simplicity, this sample does not check
// for a repeated sequence of status codes.
if( dwLastStatus == 401 )
bDone = TRUE;
break;
case 407:
// The proxy requires authentication.
printf( "The proxy requires authentication. Sending credentials...\n" );
// Obtain the supported and preferred schemes.
bResults = WinHttpQueryAuthSchemes( hRequest,
&dwSupportedSchemes,
&dwFirstScheme,
&dwTarget );
// Set the credentials before resending the request.
if( bResults )
dwProxyAuthScheme = ChooseAuthScheme(dwSupportedSchemes);
// If the same credentials are requested twice, abort the
// request. For simplicity, this sample does not check
// for a repeated sequence of status codes.
if( dwLastStatus == 407 )
bDone = TRUE;
break;
default:
// The status code does not indicate success.
printf("Error. Status code %d returned.\n", dwStatusCode);
bDone = TRUE;
}
}
// Keep track of the last status code.
dwLastStatus = dwStatusCode;
// If there are any errors, break out of the loop.
if( !bResults )
bDone = TRUE;
}
// Report any errors.
if( !bResults )
{
DWORD dwLastError = GetLastError( );
printf( "Error %d has occurred.\n", dwLastError );
}
// Close any open handles.
if( hRequest ) WinHttpCloseHandle( hRequest );
if( hConnect ) WinHttpCloseHandle( hConnect );
if( hSession ) WinHttpCloseHandle( hSession );
}
int _tmain(int argc, _TCHAR* argv[])
{
WinHttpAuthSample();
return 0;
}
都忘记上代码了。。
ganzhezeng 2011-12-27
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#include "stdafx.h"
#include <windows.h>
#include <winhttp.h>
#include <stdio.h>
#pragma comment(lib, "winhttp.lib")
DWORD ChooseAuthScheme( DWORD dwSupportedSchemes )
{
// It is the server's responsibility only to accept
// authentication schemes that provide a sufficient
// level of security to protect the servers resources.
//
// The client is also obligated only to use an authentication
// scheme that adequately protects its username and password.
//
// Thus, this sample code does not use Basic authentication
// becaus Basic authentication exposes the client's username
// and password to anyone monitoring the connection.
if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_NEGOTIATE )
return WINHTTP_AUTH_SCHEME_NEGOTIATE;
else if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_NTLM )
return WINHTTP_AUTH_SCHEME_NTLM;
else if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_PASSPORT )
return WINHTTP_AUTH_SCHEME_PASSPORT;
else if( dwSupportedSchemes & WINHTTP_AUTH_SCHEME_DIGEST )
return WINHTTP_AUTH_SCHEME_DIGEST;
else
return 0;
}
struct SWinHttpSampleGet
{
LPCWSTR szServer;
LPCWSTR szPath;
BOOL fUseSSL;
LPCWSTR szServerUsername;
LPCWSTR szServerPassword;
LPCWSTR szProxyUsername;
LPCWSTR szProxyPassword;
};
void WinHttpAuthSample( )
{
DWORD dwStatusCode = 0;
DWORD dwSupportedSchemes;
DWORD dwFirstScheme;
DWORD dwSelectedScheme;
DWORD dwTarget;
DWORD dwLastStatus = 0;
DWORD dwSize = sizeof(DWORD);
BOOL bResults = FALSE;
BOOL bDone = FALSE;
DWORD dwProxyAuthScheme = 0;
HINTERNET hSession = NULL,
hConnect = NULL,
hRequest = NULL;
bool testB = false;
DWORD errorCode = 0;
WINHTTP_CURRENT_USER_IE_PROXY_CONFIG proxyConfig;
WinHttpGetIEProxyConfigForCurrentUser(&proxyConfig);
hSession = WinHttpOpen( L"Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1;)",
WINHTTP_ACCESS_TYPE_NAMED_PROXY,
L"192.168.10.109:3128",
WINHTTP_NO_PROXY_BYPASS,
0 );
//
errorCode = GetLastError();
// Specify an HTTP server.
if( hSession )
hConnect = WinHttpConnect( hSession,
L"tieba.baidu.com" ,
INTERNET_DEFAULT_HTTP_PORT,
0 );
//
errorCode = GetLastError();
// Create an HTTP request handle.
if( hConnect )
hRequest = WinHttpOpenRequest( hConnect,
L"GET",
L"/index.html",
L"HTTP/1.1",
WINHTTP_NO_REFERER,
WINHTTP_DEFAULT_ACCEPT_TYPES,
0 );
//
errorCode = GetLastError();
// Continue to send a request until status code
// is not 401 or 407.
if( hRequest == NULL )
bDone = TRUE;
while( !bDone )
{
// If a proxy authentication challenge was responded to, reset
// those credentials before each SendRequest, because the proxy
// may require re-authentication after responding to a 401 or
// to a redirect. If you don't, you can get into a
// 407-401-407-401- loop.
if( dwProxyAuthScheme != 0 )
bResults = WinHttpSetCredentials( hRequest,
WINHTTP_AUTH_TARGET_PROXY,
// dwProxyAuthScheme,
// WINHTTP_AUTH_SCHEME_NTLM,
dwProxyAuthScheme,
NULL,
NULL,
NULL );
//
errorCode = GetLastError();
if (!testB)
{
const TCHAR contentLogin[] = L"Accept: */*\r\n";
BOOL ret = WinHttpAddRequestHeaders (hRequest, contentLogin, wcslen(contentLogin), WINHTTP_ADDREQ_FLAG_ADD);
//
errorCode = GetLastError();
const TCHAR c1[] = L"Accept-Charset: GBK,utf-8;q=0.7,*;q=0.3\r\n";
ret = WinHttpAddRequestHeaders (hRequest, c1, wcslen(c1), WINHTTP_ADDREQ_FLAG_ADD );
const TCHAR c2[] = L"Accept-Encoding: gzip,deflate\r\n";
ret = WinHttpAddRequestHeaders (hRequest, c2, wcslen(c2), WINHTTP_ADDREQ_FLAG_ADD );
const TCHAR c3[] = L"Accept-Language: zh-cn\r\n";
ret = WinHttpAddRequestHeaders (hRequest, c3, wcslen(c3), WINHTTP_ADDREQ_FLAG_ADD );
testB = true;
}
// Send a request.
bResults = WinHttpSendRequest( hRequest,
WINHTTP_NO_ADDITIONAL_HEADERS,
0,
WINHTTP_NO_REQUEST_DATA,
0,
0,
0 );
//
errorCode = GetLastError();
// End the request.
if( bResults )
{
bResults = WinHttpReceiveResponse( hRequest, NULL );
//
errorCode = GetLastError();
}
// Resend the request in case of
// ERROR_WINHTTP_RESEND_REQUEST error.
if( !bResults && GetLastError( ) == ERROR_WINHTTP_RESEND_REQUEST)
{
continue;
//
errorCode = GetLastError();
}
// Check the status code.
if( bResults )
{
bResults = WinHttpQueryHeaders( hRequest,
WINHTTP_QUERY_STATUS_CODE |
WINHTTP_QUERY_FLAG_NUMBER,
NULL,
&dwStatusCode,
&dwSize,
NULL );
//
errorCode = GetLastError();
}
if( bResults )
{
switch( dwStatusCode )
{
case 200:
// The resource was successfully retrieved.
// You can use WinHttpReadData to read the
// contents of the server's response.
printf( "The resource was successfully retrieved.\n" );
bDone = TRUE;
break;
case 401:
// The server requires authentication.
printf(" The server requires authentication. Sending credentials...\n" );
// Obtain the supported and preferred schemes.
bResults = WinHttpQueryAuthSchemes( hRequest,
&dwSupportedSchemes,
&dwFirstScheme,
&dwTarget );
// Set the credentials before resending the request.
if( bResults )
{
dwSelectedScheme = ChooseAuthScheme( dwSupportedSchemes);
if( dwSelectedScheme == 0 )
bDone = TRUE;
else
bResults = WinHttpSetCredentials( hRequest,
WINHTTP_AUTH_TARGET_PROXY,
WINHTTP_AUTH_SCHEME_NTLM,
NULL,
NULL,
NULL );
}
// If the same credentials are requested twice, abort the
// request. For simplicity, this sample does not check
// for a repeated sequence of status codes.
if( dwLastStatus == 401 )
bDone = TRUE;
break;
case 407:
// The proxy requires authentication.
printf( "The proxy requires authentication. Sending credentials...\n" );
// Obtain the supported and preferred schemes.
bResults = WinHttpQueryAuthSchemes( hRequest,
&dwSupportedSchemes,
&dwFirstScheme,
&dwTarget );
// Set the credentials before resending the request.
if( bResults )
dwProxyAuthScheme = ChooseAuthScheme(dwSupportedSchemes);
// If the same credentials are requested twice, abort the
// request. For simplicity, this sample does not check
// for a repeated sequence of status codes.
if( dwLastStatus == 407 )
bDone = TRUE;
break;
default:
// The status code does not indicate success.
printf("Error. Status code %d returned.\n", dwStatusCode);
bDone = TRUE;
}
}
// Keep track of the last status code.
dwLastStatus = dwStatusCode;
// If there are any errors, break out of the loop.
if( !bResults )
bDone = TRUE;
}
// Report any errors.
if( !bResults )
{
DWORD dwLastError = GetLastError( );
printf( "Error %d has occurred.\n", dwLastError );
}
// Close any open handles.
if( hRequest ) WinHttpCloseHandle( hRequest );
if( hConnect ) WinHttpCloseHandle( hConnect );
if( hSession ) WinHttpCloseHandle( hSession );
}
int _tmain(int argc, _TCHAR* argv[])
{
WinHttpAuthSample();
return 0;
}
都忘记上代码了。。
luciferisnotsatan 2011-12-27
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代码在哪里？
